Summer condition thermal transmittance measurement of fenestration systems using calorimetric hot box

Chen, Fangzhi; Wittkopf, Stephen

doi:10.1016/j.enbuild.2012.07.005

Cited by 46 publications

(21 citation statements)

References 4 publications

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“…Apart from the method of calculating SHGC, until very recently, there had been no international standards concerning the criteria for experiments, as mentioned above. As a result, a variety of standards and research exist with regard to the devices and experimental conditions of real model tests [11][12][13][14]. Marinoski et al, devised a calorimeter for solar heat gain calculation of fenestrations [11], and Platzer analyzed the testing procedure with the comparison between calorimetric measurements and modeling [12].…”

Section: Literature Review On Shgc Studiesmentioning

confidence: 99%

Solar Heat Gain Coefficient Analysis of a Slim-Type Double Skin Window System: Using an Experimental and a Simulation Method

Cho

2018

Energies

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Double skin facade systems are known to be capable of preventing overheating in curtain wall buildings to a certain degree. The system induces the efficient blocking of sunlight using a center blind during the summer season. Moreover, it enables overheated air in the cavity layer to be sent outdoors, resulting in a reduction of the use of energy for cooling. However, double skin facade systems can be problematic, in that they must be opened according to seasonal conditions to achieve greater energy consumption efficiencies. In current double skin facade systems, the width of the cavity layer was too wide for residents to easily operate the system. When considering this, research on an easy-to-open 270 mm slim-type double skin window (SDSW) was undertaken in order to confirm its energy efficient performance. First, official testing based on the KS L 9107 Standard was undertaken to analyze solar heat gain coefficients (SHGC) and the cavity air temperatures, according to the open and close conditions of the SDSW's external windows, enabling an analysis of the effect that the opening of windows had on reducing cooling energy needs. Next, SHGCs and cavity air temperatures were studied according to the different opening conditions of the SDSW's external window to analyze the most optimal effects on cooling energy reductions by Computational Fluid Dynamics (CFD).

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Section: Literature Review On Shgc Studiesmentioning

confidence: 99%

Solar Heat Gain Coefficient Analysis of a Slim-Type Double Skin Window System: Using an Experimental and a Simulation Method

Cho

2018

Energies

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“…Furthermore, it was demonstrated that the use of STPV over opaque PV modules can significantly increase the overall net electricity generation of the facade, due to an increased workplane illuminance and thus a reduced lighting load. Chen et al [24] developed a calorimetric hot box [25] and a solar simulator to measure the Solar Heat Gain Coefficient (SHGC) of five different STPV glazing. They studied the angular effect of the incident solar radiation and of the electrical load on the SHGC values.…”

Section: Introductionmentioning

confidence: 99%

Integral energy performance characterization of semi-transparent photovoltaic elements for building integration under real operation conditions

Olivieri

Caamaño‐Martín

Olivieri

et al. 2014

Energy and Buildings

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In this paper, a methodology for the integral energy performance characterization (thermal, daylighting and electrical behavior) of semi-transparent photovoltaic modules (STPV) under real operation conditions is presented. An outdoor testing facility to analyze simultaneously thermal, luminous and electrical performance of the devices has been designed, constructed and validated. The system, composed of three independent measurement subsystems, has been operated in Madrid with four prototypes of a-Si STPV modules, each one corresponding to a specific degree of transparency. The extensive experimental campaign, continued for a whole year rotating the modules under test, has validated the reliability of the testing facility under varying environmental conditions. The thermal analyses show that both the solar protection and insulating properties of the laminated prototypes are lower than those achieved by a reference glazing whose characteristics are in accordance with the Spanish Technical Building Code. Daylighting analysis shows that STPV elements have an important lighting energy saving potential that could be exploited through their integration with strategies focused to reduce illuminance values in sunny conditions. Finally, the electrical tests show that the degree of transparency is not the most determining factor that affects the conversion efficiency.

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“…For comparing purposes, the European norm establishes as boundary conditions: vertical position of glazing, for the outer surface, forced convection with a wind velocity of 4 m/s and radiative exchange with the ambient temperature of 10°C (fr e = 25.0 W/m 2 K); for the inner surface, natural convection allowing a small amount of forced convection (wind velocity lower than 0.3 m/s) and radiative exchange with the ambient temperature of 20 ° C (h¡ = 7.7 W/m 2 K). In the outside environment, other authors [15] suggest values of the coefficient h e , for summer conditions, of 18 W/m 2 K, giving rise to an increase in the heat transfer to the inside.…”

Section: The Optical Characteristic Parametersmentioning

confidence: 99%

Luminous and solar characterization of PV modules for building integration

Moralejo-Vázquez

Martín-Chivelet

Olivieri

et al. 2015

Energy and Buildings

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Keywords:Building integrated photovoltaics BIPV Optical characterization PV module PV laminate PV glazing Spectrophotometry TransparencyThe optical characterization of different PV modules for integration in buildings (BIPV) is presented in this paper. The investigated PV modules are laminated glasses (PV laminates) suitable for integration in facades and windows. They are made of different PV cell technologies and some of them present a certain transparency degree, making possible to combine daylighting properties with solar control and electrical generation. The approach is based on spectral UV/vis/NIR reflectance and transmittance measurements of the different considered samples, both at normal incidence and asa function of the angle of incidence when it is possible. The European standard protocols are used to determine the luminous and the solar characteristics of each sample, enabling the optical assessment of these PV modules as building elements. The results indicate the good properties of PV laminates in terms of daylighting and solar control capabilities allowing a feasible efficient integration in building facades and windows. The obtained characteristic parameters can be used to simulate the influence in the energy balance of a building of different types of PV modules integrated in facade or window elements.

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Summer condition thermal transmittance measurement of fenestration systems using calorimetric hot box

Cited by 46 publications

References 4 publications

Solar Heat Gain Coefficient Analysis of a Slim-Type Double Skin Window System: Using an Experimental and a Simulation Method

Solar Heat Gain Coefficient Analysis of a Slim-Type Double Skin Window System: Using an Experimental and a Simulation Method

Integral energy performance characterization of semi-transparent photovoltaic elements for building integration under real operation conditions

Luminous and solar characterization of PV modules for building integration

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